Use After Free Affecting ytnef package, versions <1.9.3-r1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.25% (65th percentile)

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  • Snyk IDSNYK-ALPINE321-YTNEF-8490263
  • published6 Dec 2024
  • disclosed4 Mar 2021

Introduced: 4 Mar 2021

CVE-2021-3403  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Alpine:3.21 ytnef to version 1.9.3-r1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ytnef package and not the ytnef package as distributed by Alpine. See How to fix? for Alpine:3.21 relevant fixed versions and status.

In ytnef 1.9.3, the TNEFSubjectHandler function in lib/ytnef.c allows remote attackers to cause a denial-of-service (and potentially code execution) due to a double free which can be triggered via a crafted file.

CVSS Scores

version 3.1